The 9μm Ultra Clean Aluminum Foil acts as cathode current collector for lightweight consumer lithium batteries, widely used in smartphones, notebooks, TWS earphones and wearable smart devices.It fits high-energy-density ternary power batteries for lightweight passenger vehicles and small unmanned aerial vehicles, meeting the demand for thin electrode design to boost battery energy density. This high-purity thin foil is also selected for small high-rate supercapacitors and lab-developed sodium-ion batteries, effectively reducing self-discharge caused by surface impurities.
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Applicable battery
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LiCoO₂ cathodes | NCM / NCA cathode materials | EVand 3C batteries requiring high energy density
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Alloy
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AA1100, AA1060, AA1235D
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Temper
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H18
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Aluminum Foil Thickness
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8- 20 µm
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Aluminum Foil Width
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200-1700mm
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Surface tension
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≥60dyn/cm
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Tensile strength
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≥230 MPa
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Elongation
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≥2.5%
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Key Bnenefit of 9μm Ultra Clean Aluminum Foil
- Reduced Surface Resistance. The non-leak coating procedure effectively cuts interfacial resistance and facilitates high-efficiency electron transmission.
- Superior Purity Grade. Precise surface cleaning strips residual oil and contaminants, optimizing the adhesion performance of electrode coatings.
- Thinner & Lighter Substrate. The conventional thickness of cathode aluminum foil ranges from 12 to 16 μm, while the upgraded version reaches 9 μm. It effectively lowers battery weight and improves energy density, which is highly suitable for long-distance electric vehicles and consumer electronics such as mobile phones and notebooks.
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